If this magnetic field varies in space in the right kind of way, it's quite possible for this superconducting state to focus light like a superlens. Equally it could also trap light like a black hole.
Nobody has created a magnetic field powerful enough to observe this effect on Earth but such fields must have existed elsewhere. Both Smolyaninov and Chernodub say that in the early Universe, just fractions of a second after the Big Bang, the fields must have been powerful enough to generate these superconducting states.